Louisa County's 2026 population is estimated at 10,810, reflecting a 0.84% growth rate over the past year (World Population Review estimate based on U.S. Census Bureau data). Louisa County is the 67th largest county in Iowa. The 2010 population was 11,382 and has grown -5.03% since 2010.
Data after 2023 is projected based on recent change
Overall: 41.9 years
Female: 43.4 years
Male: 41.1 years
There are 8,331 adults, (2,146 of whom are seniors) in Louisa County.
Female: 5,293 (49.6%)
Male: 5,385 (50.4%)
The racial composition of Louisa County includes 78.94% White, 9.21% other race, and smaller percentages for Asian, Black or African American, Native American and multiracial populations.
| Race | Population ↓ | Percentage (of total) |
|---|---|---|
| White | 8,429 | 78.94% |
| Other race | 983 | 9.21% |
| Two or more races | 858 | 8.04% |
| Asian | 231 | 2.16% |
| Black or African American | 110 | 1.03% |
| Native American | 67 | 0.63% |
Louisa County 's average per capita income is $47,914. Household income levels show a median of $77,354. The poverty rate stands at 9.77%.
| Name | Median ↓ | Mean |
|---|---|---|
| Married Families | $99,301 | - |
| Families | $92,278 | $105,627 |
| Households | $77,354 | $93,435 |
| Non Families | $39,593 | $53,898 |
Average Income
Median Household Income
Poverty Rate
